Jointing means for pipes and couplings and the like



July 24, 1951 E. s. BUHAYAR 2,562,014

v JOINTING MEANS FOR PIPES AND coUPLINGs AND THE LIKE Filed Oct. 2, 194'? 2 Sheets-Sheet. l

FT@ 'm HGM; INVENToR. l E/L'c 5. Bu'ILaq/cu* July 24, 1951 E. s. BUHAYAR 2,562,014

JOINTING MEANS FOR PIPES AND COUPLINGS AND THE LIKE FGW.

IN VEN TOR.

- also lresist* accidental -uncou-pling l, coupling `suitable lfor Patented July 24, 1(95-1 Appliannnocmben 2, mmseriaiw-Nb.- 'zw-5,46

m ,thefnmnn @south Ani-iw y ya machinist" (ci. inn-,1m5iT tffrnis-*i'r'wennonrentestp .mints-*between tereuscoping units-Uand-*in part-icular'to joints f orf'air j'pvipetcoup'lings-1for-rock drills andthe like.

' In 'temporarily` plugging tha-ends of smooth unflanged pipes-.or in co'uplingf -pipes--te-=one 5l Aanother;orto rock drillingandnothermachines,

yzaf'fornr of ,jointing is; desirable which-'Williv easily be' placed arielA retained*in-po'sitiomanclfvvill allow the parts to be quickly separated anda-yetiwill form aj--uid' tight-seal: under ujoressnre and `will under working conditions. l v @The object of*this-inventionis yto Vprovide/'va "-feimv ofy jointing or packing which wnrrook in 1.its vrecess under fluidlpressurev antifI bysuchrock 1 ing-f movement :between:- the parts 4to-l-loe sealedrwill A 'further object Iis-izo-:provide -partsfshapedito accommodateflthe abovementionedformfofjointy Aing.

f fa 'Ifurthenobjectisf tolprovide a mok anni `nine coupling wenfibcldying thisrfformL-of :jointing-.

A still further object is to provide a. packing'or `'joint inthe forni-of aringor ringsof? rubber.- or g :similar resilient' :material triangular .for delta 'i fshaped in cross sectionand witheithen itslbase ,or its apexfforming the bore of -t',-lfie1`fing. y VThel accompanying drawings illustratathe invvention andsome-of'its applications:

`ligs. I and II show theresilient-packinggrings partly in crosssection.

*"Fig. IV-is 'a -si'dellelevation yoff the maleinernloerl v`ofxig: III.

`member of Fig. III.

Fig vi .is simian to`v Fig. fin-.but showing-the ivpiping, Y

FigflfI-I isn-partial view-0I- Fig. 'IIIon ani-enei largedscale.

Fig; 'VI-II shows Von a vreduced Scalea iurther rapplica-tion of the invention.

, ,'F'g.' IX shows anotherV application @Pitney-Iain- Avention I'with the 1 packing ring 'in the lvform ci Fig. II, and

Fig.' shows, a-detailvin artnr-ther.,y application of theinvention.

`ConsideringFigs. LH, III, IV, land-Vythese Will 'serve for Aa description Iof' the` invention :as

appliedpto a pipe couplinglsuitable@for /usein attaching `air hose` Ypines to' roel:` drills.

-fconnectingitwof lengtl'ls of suitable forconnecting yav-hosefspipe1to..af rock drill ffamateizialjfzbemeemthe @umile parte, 1li.' his:v iur..- .cther cnmnxessedswnd jorntf-fbetwesna themffais :engaged wmlefimdempressurezathe ri-ng; miwiltebeycaug-hiz crease` the Hluckingfztogethev .otitliefeparts fundenavstll i grazi-.tier

.aziendali Eend" 3" fr' 'finfxtsiirmentwalizandmnvenientlyanasrifitsendral.

mtifthesigmoye-afnd packing correspondfhut the@l sihmip -sedgefl nfatheaapexes arejusuallyre-fimovedimmmmdedtso thatiinsection:thegpacking easifsh nirini -'=gs rfandfIIf. *7"11'16;4 apexi-ofithe ut; o' ,ffozmfafclearancefouera the-apex zniactioirnoi thef-jnintw Wfili be n ffseaili scribed with reference to Fig-, z-:Wheni'the fair passes'ythnougimhe gan? haV between; the-surfmansifanaifpmessuitevdmp occurs omthahaevts ioffthe .'tninglenduexto tliewvelocity for; the: inid4 through the passage 20 and the net pressimeqn mockiasiindiated thewdottedflines.i'liheatipping of .the triangular grimeans-.thatone -endtml of@ sibas .tenda-to ted-nce 'itsainternalfdiameter :i -morea-.rmlyvaeaimb essurevincreasr ..the-;sten landeninstontioniof: Iflhxresulting tima Benondithe-stepsfZ-si :th onstruotionlshown ieditmftelesconz @ne 2in1-nitric other:

' effective in resisting Fig. VI illustrates a form of the invention use# ful for coupling together two pipes such as two hoses. The spigots I, Ia, enter from each end of= a common socket 2 and each have their'bayonet Fig. VIII shows an adaptation of the invention" for use in testing under pressure ,plaing ended-.1 pipes. The ends 21, 28 of the pipes 29 provide-.the

spigots of the couplings. The one socket 3U is anchored by means of an hinged joint 3`I` and said Y' socket 30 is provided with the jointing ring II] to irit'thel pipe 29 in the manner already described. 'A socketl 32 similar to socket 3l! is free--to-slide towards socket '30' and clampedfwhen in position so that pipes ofvarious lengths may be accommofdatedbetweenthem.' Socket 32 also Ihas a con- -nection 33b`y which pressureifiuid can be supplied Atothe pipes to be tested.' f' With this-apparatus 'allthatv is necess'ary'for the testing loperation is `toinsert one end offthe pipe into socket 30 and then push socket 32 onto the other' end and turn i 'on the pressure fluid. -The pipe ends 21,1128 are fan easy nt inthe ringsil andthe sockets 36, 32 .and the resiliency -of thepacking material and th'e shape Vof the ring IIJ-acts under pressure -to yform an effective joint even if "ther parts dov not t closely or if the surface of the pipe'is some- -what rough or irregular as already described.

Where the outside ofV the endsof a pipe or ltube 34 cannot be encircled'by a joint'making socket as in Fig. IX'the ends may be'tted'with a plug 35 in `which a jointing'ring III similar'to that shown'in Fig. lII is' accommodated. 'Ihe connection 36" carrying the .pressure fluid-passes through the plug 35 and31 is a suitable buttress to withstand the pressure on the inner surfaceof the plug l35 to prevent it *being pushedout` of the fend of the pipe 34.lv

This arrangement is suitable in vtesting the fre tubesof a boiler. 34 will'then lrepresent one `end of a re tube and 38 asection ofthe wall'of 1aire box. v

In someinstances' the packing II] may be used Sin place of the usual gland or bucket type' of packing in cases whereY the parts are' subjected to `relative longitudinal sliding movement. 'An ap- `plication is illustrated inFig X, where 39 represents a portion of the plunger of an hydraulic jack and 40 its wall.l In' this case the'angles' of the sides l5, I6" ofthe packing Ill'and the angles of ythe walls I3, I4 of its groove-II 4may be? modified to avoid binding of the packing "between the closely fitting parts and to make the rpacking more eiective to carry the load, or in otherwords more the pressurefof the uid supporting the load. f" f Some of the advantages of this 'joint are that `the packing, owing 'to lits triangularf'or delta shapeyprovides a thinned contactmaking edge "or end'ZI which is sharp but not weak'. Also when it is deformed to fill the space between the' parts,

v'even if `they are not originally'made to'- be close fitting it recovers its shape automatically to release the parts when: the ypressure 'isremoved' i This invention provides a pack-ingoi' triangular shape which'v "is accommodated? in- .a groove f in space iny clamping engagement 4 one or other of the coupling members between which a fluid pressure resisting joint is to be made. Said groove is large enough to allow a rocking movement of the packing IE) to take place and is suitably shaped to accommodate the packing when it is distorted and for its refoovery, o/fjlshapeto releasey-the parts,A when the Epressure of the'luid to'be retained is removed.

It should be pointed out that from the above description it will be realized that the coupled parts A,according to this invention are held attached ywhen the iluid pressure is on the coupling so that separation under working conditions is diicult even without the provision of the bayonet or other 15 holding means.

What I claim as new and desire to secure by i.; Letters VPatent is:

1v. A coupling comprising two telescoping cylindrical members, an annular space between said members means for connecting said members together, an annular groove of truncated vequi- -lateral triangular cross section with its base cut.-

ting the surface of one of the adjacent peripheries of thev members, an annular notch cutting the opposite adjacent periphery of the other member yand a resilient ring corresponding in shape and loosely tting in said groove and not projecting into the annular space between, the telescopin members. .Y

2. A temporary fluid actuated coupling comprising telescoping cylindrical members, an annular space between said members, an annular groove of substantially triangular cross section in one of said members with its base towards the space between said members, and a resilient ring 'of substantially triangular shape in cross section loosely located in said groove and having its base clear of the cylindrical surface of the ungrooved member when the members are assembled, said ring rockable and deformable under uid pressure in the annular space in clamping engagement between the telescoping members.

3.,A temporary iluid actuated coupling comprising telescoping cylindrical members, an annular space between said members, a mechanical connection holding the members together, anan- Vnular groove of substantially triangular cross section in one ofjsaid members with its, base towards the space between said members, and a resilient ring of substantially triangular shape .in 'cross section loosely located in said groove 'and having its base clear of the cylindrical surface of the ungrooved member when the mem.- bers are assembled, said ring rockable and deformable under fluid pressure in the annular between the telescoping members. f f

4.A temporary :duid actuated coupling comprising telescoping cylindrical members'an annular space between said members, one member in the form of a plug in the other member, an annular groove of substantially triangular cross section in one `of said members -with its base towards the space between said members, and a resilient ring of substantially triangularshape 1in cross section loosely located in said groove and having its base clear of the cylindrical sur- -face of theungrooved member when the members are assembled, said ring rockableanddeformable under fluid pressure in the annular 5. A temporary fluid actuated couplingl com- ,.fprisins telescoping cylindrical members, anannular space between said members, one member in the form of a socket closing the other member, an annular groove of substantially triangular'cross section in one of said members with its base towards the space between said members, and a resilient ring of substantially triangular shape in cross section loosely located in said groove and having its base clear of the cylindrical surface of the ungrooved member when the members are assembled, said ring rockable and deformable under fluid pressure in the annular space in clamping engagement between the telescoping members.

ERIC STEPHEN BUHAYAR.

REFERENCES CITED The following references are of record in the ille of 4this patent:

Number Number 8 UNITED STATES PATENTS Name Date Perkins Jan. 15, 1878 Klein June 28, 1887 Kenyon Sept. 10, 1907 McElhany et al., Sept. 14, 1937 Trickey Dec. 6, 19,38 Wyss Aug. 8, 1944 FOREIGN PATENTS Country Date Switzerland Aug. '16, 1933 Great Britain Aug. 24, 1934 

